Thermally insulated three-dimensional bag

ABSTRACT

The invention relates to the technical field of packaging bags, specifically relating to a thermally insulated three-dimensional bag comprising a bag body wherein the bag body consists of a front surface, a side surface and a bottom surface; the front surface is symmetrically formed on two sides of the bottom surface; the side surface comprises the first connecting surfaces symmetrically formed on two sides of the front surface and the second connecting surfaces symmetrically formed on the other two sides of the bottom surface; a matching portion used for connecting the second connecting surfaces is formed on the first connecting surfaces and a gap is defined between the second connecting surfaces and the matching portion. This thermally insulated three-dimensional bag can improve the fastness and the aesthetic property of itself at the time of alleviating the degree of production difficulty, and possesses long life.

BACKGROUND OF THE INVENTION 1. Field of the Invention

The invention relates to the technical field of packaging bags, specifically relating to an thermally insulated three-dimensional bag.

2. Description of the Related Art

The thermally insulated three-dimensional bag is a three-dimensional bag capable of preserving heat of stored objects, and in order to achieve a good heat preservation effect, multiple layers of thermally insulated materials are often arranged inside the bag body. Although the thermally insulated material in the bag body realizes the heat-insulating function of the thermally insulated three-dimensional bag, the thickness of the bag body is increased, causing the bag body not easy to fold and form.

As shown in FIG. 1, conventional three-dimensional thermally insulated bags are often obtained by folding the bag body 1 a that is laid in a square shape, and during the folding process, a fold 2 a is formed on the bag body 1 a, the fold 2 a divides the bag body la into a side wall 3 a and a folded portion 4 a wherein the folded portion 4 a includes a folded bottom portion 41 a serving as the bottom of the three-dimensional thermally insulated bag, and a folded connecting portion 42 a for sealing the bottom of the three-dimensional thermally insulated bag, and the folded connecting portion 42 a is connected between the side wall 3 a and the folded bottom portion 41 a.

As shown in FIG. 2, the folded bottom portion 41 a and the folded connecting portion 42 a are folded in a manner of approaching the surfaces facing the outside of the thermally insulated three-dimensional bag; when the thermally insulated three-dimensional bag is formed, each folded connecting portion 42 a connected between the folded bottom portion 41 a and the side wall 3 a is folded along the fold 2 a, so that the surfaces facing the outside of the thermally insulated three-dimensional bag are attached to each other, and for each connected side of the folded bottom portion 41 a and the side wall 3 a, the surface of it that faces the inside of the thermally insulated three-dimensional bag is attached to the surface of the side wall 3 a facing the inside of the thermally insulated three-dimensional bag.

As shown in FIG. 3, the folded connecting portion 42 a and the side wall 3 a after folding and attaching finally form a sealing portion 5 a capable of achieving a sealing effect at the bottom side edge of the three-dimensional thermally insulated bag.

During the forming process of above-mentioned thermally insulated three-dimensional bag, pressing needs to be performed for the attached folded connecting portion 42 a and side wall 3 a after the folding is finished, i.e. carrying out pressing to the sealing portion 5 a, then the sealing to the thermally insulated three-dimensional bag bottom can be accomplished. The thickness of the sealing portion 5 a can be increased due to multilayer attachment of the folded connecting portion 42 a and side wall 3 a after they are folded and attached, and the increase of internal thermally insulated three-dimensional bag body 1 a, which has certain thickness itself, are prone to causes excessive thickness in sealing portion 5 a. The sealing portion 5 a with excessive thickness will increase the difficulty in pressing and influence the pressing effect, which means that partial layers of sealing portion 5 a may not be pressed completely when performing pressing and make it difficult to attach the folded connecting portion 42 a and side wall 3 a firmly. When the objects filled into the thermally insulated three-dimensional bag is too heavy, the connection between the folded connecting portion 42 a and side wall 3 a, which are not attached firmly, may be broken, i.e., the sealing in the bottom side edge of the three-dimensional thermally insulated bag will split, causing breakage to the thermally insulated three-dimensional bag and objects therein leaking therefrom. Additionally, given excessively thick sealing portion 5 a, excessively thick bottom side edge of the three-dimensional thermally insulated bag will also influence the attractiveness of the bag when it is placed in a folded mode, against users' using experience.

To solve the above mentioned problems, a thermally insulated three-dimensional bag which has better aesthetic property and can improve connection strength of itself while reducing the pressing difficulty of the bottom side edge can be designed.

SUMMARY OF THE INVENTION

Based on above problems, the invention provides a thermally insulated three-dimensional bag formed via pressing by virtue of the ultrasonic machine, which has great aesthetic property after being folded and has better firmness in the using process.

The purpose of the invention is achieved in this way:

A thermally insulated three-dimensional bag comprising a bag body wherein the bag body consists of a front surface, a side surface and a bottom surface; said front surface is symmetrically formed on two sides of said bottom surface; said side surface comprises the first connecting surfaces symmetrically formed on two sides of the front surface and the second connecting surfaces symmetrically formed on the other two sides of the bottom surface; a matching portion used for connecting the second connecting surfaces is formed on the first connecting surfaces and a gap is defined between the second connecting surfaces and the matching portion.

When the three-dimensional bag is formed, said front surface and the second connecting surfaces are turned over towards the same side on the bottom surface; said first connecting surfaces are turned over towards one side where said second connecting surface are located on said front surface and is connected with the first connecting surface on the front surface of the other side, and the first connecting surface and the second connecting surface are connected to form the side surface by connecting the edge facing said gap of the matching portion to said first connecting surface.

Furthermore, said second connecting surface may be triangular.

Furthermore, said second connecting surface may be square.

Furthermore, the first connecting portions are formed on all edges of said matching portion, the second connecting portions are formed symmetrically on said second connecting surface and are used for being attached to the first connecting portion; the first connecting surface formed in one end of said two sides of the front surface is symmetrically arranged with the third connecting portions while the first connecting surface formed in the other end of said two sides of the front surface is symmetrically arranged with the fourth connecting portions for being attached to the third connecting portions.

Furthermore, the connection between said first connecting portion and the second connecting portion and the connection between said third connecting portion and the fourth connecting portion are all pressed by ultrasonic waves.

Furthermore, folds are formed between said second connecting portion and second connecting surface, between said fourth connecting portion and the front surface, between said front surface and the bottom surface, between said first connecting surface and the front surface and between said second connecting surface and the bottom surface; intercommunicated fold is formed on said second connecting portion and the middle part of said bottom surface.

Furthermore, a bag opening is formed above the bag body and a zipper is connected with the bag opening wherein said bag opening is connected with the zipper via sewing.

Furthermore, a handle is arranged on said bag body which is connected with the bag body via sewing, and the handle is made of webbing.

Furthermore, said bag body is made of pearl wool and aluminized film.

Furthermore, an inner bag made of PEVA or EVA materials is arranged inside the bag body.

Compared with the prior art, the invention has following prominent and advantageous effects:

1. The connection of said first connecting surface and the second connecting surface of the thermally insulated three-dimensional bag has reduced the pressing difficulty, improved connection strength of itself after pressing, significantly reduced the thickness of the bottom after folding and improved its aesthetic property.

2. The thermally insulated three-dimensional bag is easy to fold and facilitates usage and storage for users.

3. The thermally insulated three-dimensional bag realizes excellent thermal insulation effect by using of pearl wool and an aluminized film.

4. The thermally insulated three-dimensional bag can seal itself via zip, further improving the thermal insulation effect.

5. The handle of the thermally insulated three-dimensional bag has good bearing capacity.

6. The PEVA and EVA inner bag in the thermally insulated three-dimensional bag can realize leakage prevention and seepage prevention, and has a good thermal insulation effect.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is the expanded view of the thermally insulated three-dimensional bag in prior art.

FIG. 2 is the diagram illustrating the folding process of the thermally insulated three-dimensional bag in prior art.

FIG. 3 is the diagram illustrating the thermally insulated three-dimensional bag after folding in prior art.

FIG. 4 is the expanded view of the thermally insulated three-dimensional bag.

FIG. 5 is the diagram illustrating the three-dimensional structure of the thermally insulated three-dimensional bag.

FIG. 6 is the folding diagram of the thermally insulated three-dimensional bag.

1 a—bag body, 2 a—fold, 3 a—side wall, 41 a—folded bottom portion, 42 a—folded connecting portion, 5 a—sealing portion, 0—bag body, 1—front surface, 2—side surface, 21—the first connecting surface, 211—matching portion, 2111—the first connecting portion, 212—the third connecting portion, 213—the fourth connecting portion, 22—the second connecting surface, 221—the second connecting portion, 23—gap, 3—bottom surface, 4—bag opening, 41—zip, 5—handle.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

To make the purpose, technical solution and advantages more clearly, the technical solution of invention is further described in detail hereinafter. It is obvious that only partial not all the embodiments of the invention is shown. It is to be understood by those skilled in the art that non-creative design of structural forms and embodiments that are similar to the technical solutions without departing from the spirit of the invention shall all fall within the protective scope of the invention.

The invention is further described in detail hereinafter with reference to the drawings.

As shown from FIG. 4 to FIG. 6, A thermally insulated three-dimensional bag comprising a bag body 0 wherein the bag body 0 consists of a front surface 1, a side surface 2 and a bottom surface 3; said front surface 1 is symmetrically formed on two sides of said bottom surface 3; said side surface 2 comprises the first connecting surfaces 21 symmetrically formed on two sides of the front surface 1 and the second connecting surfaces 22 symmetrically formed on the other two sides of the bottom surface 3; a matching portion 211 used for connecting the second connecting surfaces 22 is formed on the first connecting surfaces 21 and a gap 23 is defined between the second connecting surfaces 22 and the matching portion 211. When the three-dimensional bag is formed, said front surface 1 and the second connecting faces 22 are turned over towards the same side on the bottom surface 3; said first connecting surfaces 21 are turned over towards one side where said second connecting surface 22 are located on said front surface 1 and is connected with the first connecting surface 21 on the front surface 1 of the other side, and the first connecting surface 21 and the second connecting surface 22 are connected to form said side surface 2 by connecting said edge facing said gap 23 of the matching portion 211 to said first connecting surface 21. The matching of said first connecting surface 21 and the matching portion 211 has effectively reduced thickness of the bottom sealing portion of the thermally insulated three-dimensional bag body 0 which needs to be pressed after being folded, reduced the difficulty in pressing and forming, and made it easier to complete the pressing process. Meanwhile, due to the fact that the thickness of the sealing portion is reduced, the sealing portion is pressed more completely, the effect after pressing and forming is improved, the connection between said first connecting surface 21 and the second connecting surface 22 is firmer, the thermally insulated three-dimensional bag is firmer after forming, and the service life is longer. When the thermally insulated three-dimensional bag is formed, the connection between said first connecting surface 21 and the second connecting surface 22 can seal the existing gap 23 when the thermally insulated three-dimensional bag is unfolded, so that the lower end of the formed thermally insulated three-dimensional bag does not have excessive thickness, and the thermally insulated three-dimensional bag is more attractive when being folded.

Furthermore, said second connecting surface 22 may be triangular. When said second connecting surface 22 is triangular, said second connecting surface 22 can be connected to the first connecting surface 21 by saving material to the maximum extent on the premise of not affecting the overall firmness of the thermally insulated three-dimensional bag, and at this time, the edge of said matching portion 211 facing the gap 23 is connected to the oblique edge of the triangular second connecting surface 22 facing the gap 23.

Furthermore, said second connecting surface 22 may be square. When said second connecting surface 22 is square, after said first connecting surface 21 is connected with the second connecting surface 22, the contact area of said matching portion 211 and the second connecting surface 22 is increased, which means the shielding and sealing effect of said second connecting surface 22 on said gap 23 is better and leakage and seepage is less likely to occur in connection between said first connecting surface 21 and second connecting surfaces 22.

As shown in FIG. 4, the first connecting portions 2111 are formed on all edges of said matching portion 211, the second connecting portions 221 are formed symmetrically on said second connecting surface 22 and are used for being attached to the first connecting portion 2111; said first connecting surface 21 formed in one end of said two sides of the front surface 1 is symmetrically arranged with the third connecting portions 212 while the first connecting surface 21 formed in the other end of said two sides of the front surface 1 is symmetrically arranged with the fourth connecting portions 213 for being attached to the third connecting portions 212. Specifically, the attachment of said first connecting portion 2111 and the second connecting portion 221 realizes the connection between said first connecting surface 21 and second connecting surfaces 22; the attachment of said third connecting portion 212 and the fourth connecting portion 213 realizes the connection between said first connecting surfaces 21, further form a complete said bag body 0 among said front surface 1, side surface 2, and the bottom surface.

Furthermore, the connection between said first connecting portion 2111 and the second connecting portion 221 and the connection between said third connecting portion 212 and the fourth connecting portion 213 are all pressed by ultrasonic waves. Specifically, in the forming process of the thermally insulated three-dimensional bag, the ultrasonic pressing machine performs ultrasonic vibration to fuse said first connecting portion 2111 and the second connecting portion 221, and fuse the third connecting portion 212 and the fourth connecting portion 213, thereby completing the formation of the thermally insulated three-dimensional bag. The ultrasonic pressing is free from using the needle and thread auxiliary materials in forming the thermally insulated three-dimensional bag, and the joint is smooth and burr-free, so that the insulated three-dimensional bag has better hand feeling at the time of saving the production cost.

As shown in FIG. 4 and FIG. 6, folds are formed between said second connecting portion 221 and second connecting surface 22, between said fourth connecting portion 213 and the first connecting surfaces 21, between said front surface 1 and the bottom surface 3, between said first connecting surface 21 and the front surface 1 and between said second connecting surface 22 and the bottom surface 3; intercommunicated fold is formed on said second connecting surface 22 and the middle part of said bottom surface 3. Specifically, when a user folds the thermally insulated three-dimensional bag, said second connecting surface 22 and the surface of the bottom surface 3 facing the outer side of the bag body 0 are folded and closed together along the fold, the surface facing the inner side of the bag body 0 on said first connecting surface 21 is folded and closed together along the fold between the fourth connecting portion 213 and the first connecting surface 21; in the folding process, said second connecting surface 22 is folded along the fold between said second connecting portion 221 and the second connecting surface 22. The folds between said front surface 1 and the bottom surface 3, between said first connecting surface 21 and the front surface 1, and between said second connecting surface 22 and the bottom surface 3 are beneficial to the rapid forming of the bag body 0; when a user changes the thermally insulated three-dimensional bag from a folded state to a use state, the folds can help the user to rapidly deform the thermally insulated three-dimensional bag.

As shown in FIG. 5, a bag opening 4 is formed above the bag body 0 and a zipper 41 is connected with the bag opening 4 wherein said bag opening 4 is connected with the zipper 41 via sewing. Specifically, the zipper 41 connected via sewing can be firmly fixed on said bag opening 4 and when the user puts objects need preserving heat like food into the thermally insulated three-dimensional bag, zipping up said zipper 41 can realize purpose of sealing and preserving heat.

As shown in FIG. 5 and FIG. 6, a handle 5 is arranged on said bag body 0 which is connected with the bag body 0 via sewing, and the handle 5 is made of webbing. Specifically, the user can take the thermally insulated three-dimensional bag through the handle 5, and sewing connection makes the connection between said handle 5 and the bag body 0 firmer and increases the bearing capacity of said handle 5, so that the thermally insulated three-dimensional bag can hold more objects; the handle adopting webbing has more stable structure and is less likely to broke.

Furthermore, said bag body 0 is made of pearl wool and aluminized film. Specifically, the heat of objects placed in the thermally insulated three-dimensional bag can be preserved well by using of pearl wool and an aluminized film

Furthermore, an inner bag made of PEVA or EVA materials is arranged inside the bag body 0. Specifically, since the PEVA or EVA materials possess great leakage prevention, seepage prevention, and thermal insulation effect, when the user puts objects containing moisture into the thermally insulated three-dimensional bag, the inner bag adopting PEVA or EVA materials can effectively prevent the moisture in the objects from seeping from the thermally insulated three-dimensional bag, and further preserving heat. At the same time, PEVA or EVA materials are relatively soft and the inner bag will not affect the folding of the thermally insulated three-dimensional bag.

The invention and its embodiments have been described above, but the description is not limited thereto; only one embodiment of the invention is shown in the drawings, and the actual structure is not limited thereto. Therefore, all equivalent changes made according to the structure, shape and principle of the invention shall all fall within the protection scope of the invention. 

1. A thermally insulated three-dimensional bag comprising a bag body (0) wherein the bag body (0) consists of a front surface (1), a side surface (2) and a bottom surface (3); said front surface (1) is symmetrically formed on two sides of said bottom surface (3); said side surface (2) comprises the first connecting surfaces (21) symmetrically formed on two sides of the front surface (1) and the second connecting surfaces (22) symmetrically formed on the other two sides of the bottom surface (3); a matching portion (211) used for connecting the second connecting surfaces (22) is formed on the first connecting surfaces (21) and a gap (23) is defined between said second connecting surfaces (22) and the matching portion (211); when the three-dimensional bag is formed, said front surface (1) and the second connecting faces (22) are turned over towards the same side on the bottom surface (3); said first connecting surfaces (21) are turned over towards one side where said second connecting surface (22) are located on said front surface (1) and is connected with the first connecting surface (21) on the front surface (1) of the other side, and said first connecting surface (21) and the second connecting surface (22) are connected to form said side surface (2) by connecting said edge facing said gap (23) of the matching portion (211) to said first connecting surface (21).
 2. The thermally insulated three-dimensional bag of claim 1 wherein said second connecting surface (22) may be triangular.
 3. The thermally insulated three-dimensional bag of claim 1 wherein said second connecting surface (22) may be square.
 4. The thermally insulated three-dimensional bag of claim 1 wherein the first connecting portions (2111) are formed on all edges of said matching portion (211), the second connecting portions (221) are formed symmetrically on said second connecting surface (22) and are used for being attached to the first connecting portion (2111); said first connecting surface (21) formed in one end of said two sides of the front surface (1) is symmetrically arranged with the third connecting portions (212) while the first connecting surface (21) formed in the other end of said two sides of the front surface (1) is symmetrically arranged with the fourth connecting portions (213) for being attached to the third connecting portions (212).
 5. The thermally insulated three-dimensional bag of claim 4 wherein the connection between said first connecting portion (2111) and the second connecting portion (221) and the connection between said third connecting portion (212) and the fourth connecting portion (213) are all pressed by ultrasonic waves.
 6. The thermally insulated three-dimensional bag of claim 4 wherein folds are formed between said second connecting portion (221) and second connecting surface (22), between said fourth connecting portion (213) and the first connecting surfaces (21), between said front surface (1) and the bottom surface (3), between said first connecting surface (21) and the front surface (1) and between said second connecting surface (22) and the bottom surface (3); intercommunicated fold is formed on said second connecting surface (22) and the middle part of said bottom surface (3).
 7. The thermally insulated three-dimensional bag of claim 1 wherein a bag opening (4) is formed above the bag body (0) and a zipper (41) is connected with the bag opening (4) wherein said bag opening (4) is connected with the zipper (41) via sewing.
 8. The thermally insulated three-dimensional bag of claim 1 wherein a handle (5) is arranged on said bag body (0) which is connected with the bag body (0) via sewing, and the handle is made of webbing.
 9. The thermally insulated three-dimensional bag of claim 1 wherein said bag body (0) is made of pearl wool and aluminized film.
 10. The thermally insulated three-dimensional bag of claim 1 wherein an inner bag made of PEVA or EVA materials is arranged inside the bag body (0). 